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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
//
// demo_xml.cpp
//
// (C) Copyright 2002-4 Robert Ramey - http://www.rrsd.com .
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <iomanip>
#include <iostream>
#include <fstream>
#include <string>
#include <cstdio> // remove
#include <boost/config.hpp>
#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{
using ::remove;
}
#endif
#include <boost/archive/tmpdir.hpp>
#include <boost/archive/xml_iarchive.hpp>
#include <boost/archive/xml_oarchive.hpp>
#include "demo_gps.hpp"
void save_schedule(const bus_schedule &s, const char * filename){
// make an archive
std::ofstream ofs(filename);
assert(ofs.good());
boost::archive::xml_oarchive oa(ofs);
oa << BOOST_SERIALIZATION_NVP(s);
}
void
restore_schedule(bus_schedule &s, const char * filename)
{
// open the archive
std::ifstream ifs(filename);
assert(ifs.good());
boost::archive::xml_iarchive ia(ifs);
// restore the schedule from the archive
ia >> BOOST_SERIALIZATION_NVP(s);
}
int main(int argc, char *argv[])
{
// make the schedule
bus_schedule original_schedule;
// fill in the data
// make a few stops
bus_stop *bs0 = new bus_stop_corner(
gps_position(34, 135, 52.560f),
gps_position(134, 22, 78.30f),
"24th Street", "10th Avenue"
);
bus_stop *bs1 = new bus_stop_corner(
gps_position(35, 137, 23.456f),
gps_position(133, 35, 54.12f),
"State street", "Cathedral Vista Lane"
);
bus_stop *bs2 = new bus_stop_destination(
gps_position(35, 136, 15.456f),
gps_position(133, 32, 15.300f),
"White House"
);
bus_stop *bs3 = new bus_stop_destination(
gps_position(35, 134, 48.789f),
gps_position(133, 32, 16.230f),
"Lincoln Memorial"
);
// make a routes
bus_route route0;
route0.append(bs0);
route0.append(bs1);
route0.append(bs2);
// add trips to schedule
original_schedule.append("bob", 6, 24, &route0);
original_schedule.append("bob", 9, 57, &route0);
original_schedule.append("alice", 11, 02, &route0);
// make aother routes
bus_route route1;
route1.append(bs3);
route1.append(bs2);
route1.append(bs1);
// add trips to schedule
original_schedule.append("ted", 7, 17, &route1);
original_schedule.append("ted", 9, 38, &route1);
original_schedule.append("alice", 11, 47, &route1);
// display the complete schedule
std::cout << "original schedule";
std::cout << original_schedule;
std::string filename(boost::archive::tmpdir());
filename += "/demo.xml";
// save the schedule
save_schedule(original_schedule, filename.c_str());
// ... some time later
// make a new schedule
bus_schedule new_schedule;
restore_schedule(new_schedule, filename.c_str());
// and display
std::cout << "\nrestored schedule";
std::cout << new_schedule;
// should be the same as the old one. (except for the pointer values)
std::remove(filename.c_str());
delete bs0;
delete bs1;
delete bs2;
delete bs3;
return 0;
}